EP3296123A1 - Film d'agent structurant - Google Patents

Film d'agent structurant Download PDF

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Publication number
EP3296123A1
EP3296123A1 EP16189010.8A EP16189010A EP3296123A1 EP 3296123 A1 EP3296123 A1 EP 3296123A1 EP 16189010 A EP16189010 A EP 16189010A EP 3296123 A1 EP3296123 A1 EP 3296123A1
Authority
EP
European Patent Office
Prior art keywords
substrate
pattern
film
forming film
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16189010.8A
Other languages
German (de)
English (en)
Inventor
Pius Steinmann
Oliver Grossmann
Vito Monteleone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swiss Krono Tec AG
Original Assignee
Swiss Krono Tec AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swiss Krono Tec AG filed Critical Swiss Krono Tec AG
Priority to EP16189010.8A priority Critical patent/EP3296123A1/fr
Publication of EP3296123A1 publication Critical patent/EP3296123A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers
    • B44C3/025—Superimposing layers to produce ornamental relief structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers

Definitions

  • the invention relates to a pattern-forming film, a method for producing a pattern-forming film and a method for applying a structure to the surface of a substrate by means of the pattern-forming film.
  • a press plate having a contoured surface embosses a film that is laminated to a substrate during pressing. It is taught to apply by means of screen or offset printing a structure of lacquer on the press plate, which then imprints into the film which is laminated to the substrate.
  • the WO 2014 014400 A9 proposes for introducing structures into a surface of a substrate to print on a film, so that this pattern-forming film has an outer surface on which a structure is applied and an inner surface which is unchanged smooth.
  • the inside of the film is placed on the substrate and structuring film and substrate are pressed.
  • the structure is transferred from the outside through the pattern-forming film to the surface of the substrate.
  • the invention is therefore based on the object to produce an alternative method for the production of a pattern-forming film and an alternative pattern-forming film, which is preferably simple and inexpensive to produce. It is a further object of the invention to propose an alternative, in particular simple and cost-effective method for applying a structure to a surface of a substrate.
  • a pattern-forming film which has an outer side and an embossing side is provided on the embossing side at least in sections with a structuring medium applied with a digital applicator, typically with a laser or with an inkjet printer.
  • the embossing side is designed to emboss a surface of a substrate.
  • the pattern-forming film according to the invention is therefore used in such a way that the embossed side with the structure applied thereon is placed on the surface of the substrate, after which the pattern-forming film and the substrate are pressed in a press. The structure then imprints into the surface of the substrate.
  • the structuring medium may preferably be used in a digital application device, e.g. B. a 3D printer, a laser printer or an inkjet printer can be processed.
  • the medium can be processed as a solid or in liquid form.
  • the structure-giving medium is preferably applied by means of a digital printer, in particular an inkjet printer, a laser printer, a 2-D or 3-D printer in solid or liquid form.
  • the medium is applied to the pattern-forming film and bound there. It forms a structure there, that is, that the medium is applied not only as a layer on the surface of the pattern-forming film but as a survey that extends beyond the surface of the film.
  • the height of the structure may preferably be from 1 ⁇ m to 1000 ⁇ m. It can vary to replicate a given model in detail.
  • the minimum height gives The maximum application height results from the maximum application amount that can be applied to the surface of the substrate due to the minimum application quantity of the structure-providing medium which the application device can at least process. For example, repeating patterns or individual images (silhouettes of people, objects or areas such as city silhouettes), but also replicas of natural objects such. As wood grain, bark imitations or pictures of plants can be applied as a structure on the pattern forming film.
  • the structure is applied to the structure-forming film on the basis of a digital data record. It is advantageous that e.g. in lifelike reproductions of wood grains of the same digital data set, which is used for the manufacture of the structure, can also be used to decorate a decorative film, eg. B. to print a paper foil or a plastic film with a two-dimensional decor in color. After or before the decoration is produced, the corresponding structure is printed on the film with the identical data record. In this way, substrates can be made uniform, z. For example, a decorative film or decorative paper can be laminated onto the substrate, then either the decorative film or a further coating which is applied to the decorative film can be provided with a three-dimensional structure by means of the pattern-forming film.
  • a decorative film or decorative paper can be laminated onto the substrate, then either the decorative film or a further coating which is applied to the decorative film can be provided with a three-dimensional structure by means of the pattern-forming film.
  • a high-resolution structure can be generated.
  • details of the structure can be applied in a resolution of 25 dpi to 4800 dpi.
  • the structure-giving medium can be applied very differentiated and finely distributed in different thickness on the printing side of the pattern-forming film.
  • the three-dimensional structure, which is produced on the pressure side of the pattern-forming film, can be applied with different thicknesses, based on the surface of the printing side, of approx. ⁇ m to about 1000 microns, so that pronounced relief-like structures can be applied, which are usually tactile perceptible on the surface of the substrate.
  • the texturing film can be chosen from a variety of materials.
  • the texturing film can z. B. made of metal, especially aluminum. It can also be made of plastic, paper, cardboard or a composite material. It can be designed in one or more layers. If the texturing film is made of plastic, it preferably has one or a combination of the following plastics: polyethylene, high density polyethylene, polypropylene, polyethylene terephthalate, polyurethane, thermoplastic polyurethane, polyacetate, polycarbonate, polyimide, polystyrene, polyvinyl chloride or polytetrafluoroethylene.
  • polyethylene high density polyethylene
  • polypropylene polyethylene terephthalate
  • polyurethane polyurethane
  • thermoplastic polyurethane polyacetate
  • polycarbonate polyimide
  • polystyrene polyvinyl chloride or polytetrafluoroethylene.
  • the pattern-forming film may also have a coating, for.
  • a coating for.
  • the coating can improve the adhesion of the structure-imparting medium to the pattern-forming film, or it can influence the surface property of the pattern-forming film, for example, B. allow a matte or glossy surfaces.
  • At least the printing side of the pattern-forming film may have a matt or glossy to high-gloss surface. Accordingly, the print side creates a dull or glossy or glossy surface on the substrate.
  • the pattern-forming film according to the invention can be used once or several times. According to an advantageous development of the invention, an easy-to-use pattern-forming film can remain on the substrate after embossing the surface of the substrate until it is put into use.
  • the invention comprises a method for producing the pattern-forming film comprising the steps of providing a film with a printing side, which later rests on the surface of the substrate when the substrate is embossed, and applying a solid or liquid-forming medium by means of a digital application device and optionally Drying or curing of the structure-giving medium.
  • a solid or liquid medium z. B. by a 3D printer, a laser printer or an inkjet printer applied to the printing side of a film, which is the pattern-forming film.
  • the structuring medium intimately bonds to the print side of the film so that it will adhere completely to the print side during embossing and also during removal of the patterning film from the substrate.
  • the medium can harden when z. B. form by the action of temperature and / or radiation polymers or solid particles with each other and / or connect to the pressure side of the pattern forming film, for example, weld, fuse or glue.
  • a processed by a 3D printer medium is applied in the form of solid particles and z.
  • Structure-providing media either in liquid form referred to as inks or as solid particles are known per se.
  • the applied to the print side structure which is imprinted after embossing in the surface of the substrate as a negative, can either be a self-contained motif, but it can also reproduce a motif multiple times or they can only reproduce the part of a motif.
  • z. B. print marks or other information relating to the alignment of the pattern forming film relative to the substrate or a press in which the patterning film and the substrate are pressed to the structure on the surface of the Transfer substrate.
  • This information can also, since they are transferred to the surface of the substrate, be used for subsequent processing steps of the substrate, for. B. to give instructions for dividing the substrate into individual parts.
  • This further information may also be applied by the digital applicator or may be applied by other applicators.
  • the invention further includes a method for applying a structure to the surface of a substrate.
  • This method comprises the steps of providing a substrate having a surface and providing a pattern forming film having a printing side to which is at least partially applied a patterning medium forming a pattern. Furthermore, the method comprises placing the printing side of the pattern-forming film on the surface of the substrate and pressing the substrate and pattern-forming film in a press, wherein the structure which is applied on the printing side of the pattern-forming film, imprints into the surface of the substrate.
  • the medium imparting the structure applied to the printing side of the pattern-forming film comes into direct contact with the surface of the substrate in order to produce there a negative of the structure applied on the printing side.
  • the surface of the substrate is embossed according to the invention relief and thus also shows a structure.
  • the pressure of the press is required to impress the structure into the surface of the substrate.
  • the pressure is usually from 10 N / mm 2 to 1000 N / mm 2 .
  • an elevated temperature is also used, so that the surface of the substrate is better deformable.
  • the temperature is z. From 40 ° C to 300 ° C, preferably from 140 ° C to 200 ° C.
  • the pressure is applied by a press, usually a short-cycle press (KT press) or by a continuous press.
  • a pressing time of a maximum of 150 seconds is sufficient, usually 10 seconds to 30 seconds, at least a pressing time of 5 seconds is sufficient to image the structure on the printing side of the pattern-forming film as negative, and thus also as a structure on the surface of the substrate ,
  • the pressing conditions are chosen depending on the substrate to be embossed. Optimal press conditions determined by the expert with a few orienting experiments.
  • Suitable substrates are all materials which can be embossed by the pattern-forming film, typically wood or wood-based materials, plastics, in particular thermoplastics, metals, in particular metal foils, but also ceramic materials. Wood fiber or chipboard, plywood, laminated wood and OSB boards are among the wooden materials that are referred to in the context of the invention as wood-based materials.
  • the materials can also be used as an intermediate, for. B. before or during drying, pressing or curing when they are in a manufacturing state in which they are still soft enough to be embossed.
  • the materials can also be heated for embossing the surface or otherwise softened temporarily to allow embossing of the surface.
  • the substrate has a surface coating which is embossed by the pattern-forming film.
  • This surface coating which then forms the surface of the substrate, may preferably consist of a lacquer or a synthetic resin. Lacquer or synthetic resin can advantageously be highly viscous or dried, but not yet cured. Also, gelled paints, z. B. UV or radiation-curing coatings can be embossed in a simple manner by the pattern-forming film, so that the surface coating as a structure shows an exact and detailed negative of the applied to the pressure side of the pattern forming film structure.
  • Typical synthetic resin coatings may well be suitable as a surface coating of a substrate in order to be pressed with the pattern-forming film according to the invention, in particular if the press is operated at a pressing temperature of about 140 ° C. to about 200 ° C.
  • the synthetic resin is preferably used as a precondensed or dried but not yet cured surface coating z. B. used by wood-based panels. It liquefies in the press at the temperatures mentioned. In this state, it can be embossed by the pattern-forming film. In the course of the pressing process, the resin cures at the temperatures mentioned, so that a permanent structure can be embossed into the surface.
  • Typical synthetic resins are melamine resin, phenol-formaldehyde resin and urea resins.
  • lacquers are acrylate- or metacrylate-based lacquers, polyurethane lacquers, epoxy lacquers, or water-based lacquers. Preference is given to using UV- or radiation-curing lacquers and also thermally curing lacquers, because these lacquers can be gelled (partially hardened) to match the pattern-forming film according to the invention, so that after the pressing process an optimal reproduction of the structure of the pattern-forming foil in the lacquer surface is mapped, e.g. , B. because the paint is no longer bleeding. During the pressing process or afterwards, the varnish can be fully cured.
  • An essential advantage of the above-described method is that, apart from a press, it makes do without any further technical assistance in impressing the structure into the surface of the substrate. There is no need for lasers or other aids.
  • Fig. 1 shows a pattern-forming film 1 of high density polyethylene, z. From Tyvek®.
  • the structure-forming film 1 has a pressure side 2 and an outer side 3.
  • a structure 4 is applied on the print side.
  • the structure 4 on the printing side 2 occupies a portion of the entire printing side.
  • This structure 4 has a different height in sections. At the point 4a the height is 10 ⁇ m, at the point 4b the height is 150 ⁇ m and at the point 4c the height is 450 ⁇ m.
  • the surface of the printing side 2, unless it is provided with a structure 4, is smooth and the printing side 2 may have gloss levels of matt to high gloss.
  • the structure 4 is produced by single or layered application and curing of a liquid medium 5, which by means of a digital application device, here a digital printer, applied and thermal by UV light or laser radiation is cured.
  • a liquid medium which by means of a digital application device, here a digital printer, applied and thermal by UV light or laser radiation is cured.
  • liquid media are known per se, for. From manufacturers, here ink manufacturers such as Hewlett Packard (HP), Durst, Sensient, Mimaki, Seiko or Vutek. Inks that are used as a liquid medium 5, but can also be prepared by yourself, z. B. with raw materials from BASF, MERK, Clariant or Acolor.
  • Various types of inks are known, e.g. As solvent-based inks (solvent or Ecosolventtinten), latex and UV inks, which are used depending on the application.
  • the inks contain or consist of components which, after drying or hardening, are deposited as a solid in
  • a digital printer can be used, with which solid-particle exhibiting, structure-giving medium 5 is applied as a solid once or in layers on the printing side 2 and cured by heat or UV light or in particular laser radiation in a known per se, so that the solid particles are joined together to form a solid structure.
  • Such solid particles, the z. B. can be processed with a 3-D printer and applied to the printing side of a structure-forming film, are known per se.
  • the drying, curing or setting binds the medium 5 simultaneously to the printing side 2 of the pattern-forming film 1.
  • the medium 5, which is applied by the digital applicator on the printing side 2 forms the structure 4.
  • the structure 4 has a strength that is sufficient to emboss the surface of a substrate.
  • the digital application device prints the structure 4 according to a predetermined data set, which is also stored digitally. Without difficulty complex designs can be realized, eg. B. a mountain relief in the dimensions 280 x 207 cm or 560 x 207 cm. Likewise, wood structures can be digitized and tuned to a desired plate or panel size, the substrate with several identical wood structures in panel size or plate size printed and then divided into individual finished parts. In this way, structures 4 can be reproduced in a fineness on the printing side 2 of the pattern-forming film 1, which is limited only by the resolution of the respective application device.
  • the fineness of the structure refers not only to the layer-by-layer application but also to the height to which the structure-giving medium is applied in each case.
  • a substrate 6 having a surface 7 is provided, e.g. B. of wood material.
  • chipboards are predominantly used as wood-based panels, which can be coated and subsequently patterned by means of the pattern-forming film according to the invention.
  • wood fiber boards are well suited to be provided with a coating, which is then embossed.
  • an MDF board is used as the substrate 6, on which - starting from the top of the wood-based panel - an overlay, including a decorative paper and underneath an underlay are applied as a layer 8, which are each impregnated with synthetic resin.
  • the overlay forms in the layer 8, the surface 7 of the substrate 6.
  • the resin is pre-dried, but not yet cured. It is, like underlay and decorative paper, soaked or coated with a polymerizing synthetic resin, preferably melamine or melamine and formaldehyde.
  • the synthetic resin is dried by the action of heat, so it is partially hardened.
  • the printing side 2 of the pattern-forming film 1 described above is placed on this surface 7 of the substrate 6, which is formed from not yet cured synthetic resin.
  • print marks which are applied on the printing side 2 of the structure-forming film 1 prove to be particularly suitable to allow alignment of the pattern-forming film 1 on the decor, which is given here by the decorative paper in the layer 8.
  • This pressed material stack of coated substrate 6 and the structuring sensor film 1 described above is placed in a KT press.
  • the press is closed, wherein a bottom of the substrate and the outside of the pattern-forming film each rest against a press plate.
  • the press plate is a simple, smooth press plate, to which no particular requirements are made in terms of smoothness or gloss. Any unevenness in the press plate is compensated by the outside of the pattern forming film.
  • the pressed material stack is embossed at a pressure of 350 N / mm 2 and a temperature of 180 ° C for 18 seconds. During pressing, the synthetic resin first liquefied to harden and solidify.
  • the pattern-forming film 1 is pressed in the press onto the surface 7 of the substrate 6, so that the structure 4 is impressed into the layer 8 of the not yet cured synthetic resin.
  • the structure 4 of the pattern-forming film 1 is pressed in as a negative, so that the surface 7 of the substrate 6 now has a negative structure 9.
  • the negative structure 9 now formed in the surface 7 of the substrate 6 is fixed.
  • the surface 7 thus shows a negative structure 9, which is a negative of the structure 4 of the pattern-forming film 1.
  • the curing of the layer 8 now in the negative structure 9 creates no connection between the structure 4 and the synthetic resin of the layer 8.
  • the pattern-forming film 1 can be easily removed from the surface 7 of the substrate 6.
  • the pressing of the negative structure into the surface 7 of the substrate 6 by means of a pattern-forming film 1 can be done according to two alternatives.
  • the pattern forming film 1 can be placed and fixed according to a first alternative, especially for repeated use in the press and thus be used several times as a structurer.
  • reusable structurizer films 1 can be used, which are either fixed in the short-cycle press or in continuous presses z. B. can also be designed as circumferential bands.
  • the pattern forming film 1, which is not connected in this case with the press, but which is arranged as the uppermost layer of the pressed material stack with the printing side 2 to the layer 8 and preferably printing marks on the decor of Decor paper are aligned to go with the entire sandwich package consisting of wood material and substrate 6 in the press and thus to characterize the negative structure.
  • the pattern-forming film 1 can remain on the substrate 6 after the pressing process and at the same time be used as a protective film for further processing. Only the end customer after assembly pulls the pattern forming film 1, which also serves as a protective film, from the workpiece.
  • This alternative is used in particular for high-gloss surfaces.
  • an HDF board with a lacquered surface is used as the substrate 6, wherein a first lacquer layer applies a mostly colored decoration, while a second lacquer layer 8, which is applied to the first lacquer layer, is usually transparent.
  • the second lacquer layer 8 forms the surface 7 of the substrate 6.
  • the second lacquer layer 8 is partially gelled, so that it is no longer flowable, but can still be embossed.
  • a pattern-forming film 1 is placed on this partially gelled surface 7 of the substrate 6.
  • the pattern-forming film 1 is aligned in coordination with the decor and the texturing film 1 and the substrate 6 are pressed together, wherein the paint is cured.
  • the structure 4 of the pattern-forming film 1 is imaged in the surface 7 of the substrate 6 as a negative structure 9.
  • the pattern forming film 1 can either be used several times or z if used once. B. remain as a protective film on the substrate 6 until the beginning of use.

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  • Laminated Bodies (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP16189010.8A 2016-09-15 2016-09-15 Film d'agent structurant Withdrawn EP3296123A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16189010.8A EP3296123A1 (fr) 2016-09-15 2016-09-15 Film d'agent structurant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16189010.8A EP3296123A1 (fr) 2016-09-15 2016-09-15 Film d'agent structurant

Publications (1)

Publication Number Publication Date
EP3296123A1 true EP3296123A1 (fr) 2018-03-21

Family

ID=56979375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16189010.8A Withdrawn EP3296123A1 (fr) 2016-09-15 2016-09-15 Film d'agent structurant

Country Status (1)

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EP (1) EP3296123A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2179863A1 (fr) * 2008-10-27 2010-04-28 Flooring Technologies Ltd. Procédé d'affinement d'une plaque de support, notamment une plaque en bois ou en matériau dérivé du bois
DE102009053498A1 (de) 2009-11-16 2011-05-19 Giesecke & Devrient Gmbh Laminierkörper
WO2013060375A1 (fr) * 2011-10-27 2013-05-02 Hewlett-Packard Indigo B.V. Création de matrice de gaufrage
WO2014014400A1 (fr) 2012-07-17 2014-01-23 Floor Iptech Ab Feuille supplémentaire
EP2805831A1 (fr) * 2013-05-23 2014-11-26 Spanolux N.V. Div. Balterio Procédé pour la décoration d'un substrat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2179863A1 (fr) * 2008-10-27 2010-04-28 Flooring Technologies Ltd. Procédé d'affinement d'une plaque de support, notamment une plaque en bois ou en matériau dérivé du bois
DE102009053498A1 (de) 2009-11-16 2011-05-19 Giesecke & Devrient Gmbh Laminierkörper
WO2013060375A1 (fr) * 2011-10-27 2013-05-02 Hewlett-Packard Indigo B.V. Création de matrice de gaufrage
WO2014014400A1 (fr) 2012-07-17 2014-01-23 Floor Iptech Ab Feuille supplémentaire
EP2805831A1 (fr) * 2013-05-23 2014-11-26 Spanolux N.V. Div. Balterio Procédé pour la décoration d'un substrat

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